Solar cell screen etching

What is etching process in solar cell processing?

Etching is a process which removes material from a solid (e.g., semiconductor or metal). The etching process can be physical and/or chemical, wet or dry, and isotropic or anisotropic. All these etch process variations can be used during solar cell processing.

Can plasma etching be used for in-line production in solar cell fabrication?

An in-line capable plasma etching system is feasible to close the gap especially between diffusion and deposition furnaces to enable a totally in-line solar cell fabrication process. The aim of this work is the development and implementation of plasma etching processes for in-line production in solar cell fabrication.

Can acid etching be used for surface modification of Mace B-Si solar cells?

Acid etching Acid etching being the most effective and commonly used method for texturing mc-Si wafers in industry, its usefulness on surface modification of MACE b-Si samples were investigated by many researchers and as of now, it has emerged as the best suited method for the essential surface modification step in MACE b-Si solar cells.

Which etching process is used to etch DWS c-Si wafer surface?

Both the groups used standard alkaline (KOH based) etching process (after the SDR process) for texturing the DWS c-Si wafer surface. The solar cell performance parameters of their DWS c-Si cells were similar to that of the conventional saw damage etched and alkaline textured MWSS c-Si cells .

Why is surface texturing important in solar cell fabrication?

Surface texturing for suppressing the reflection losses is the first and foremost step in the solar cell fabrication process. Over the years, multi-crystalline silicon (mc-Si) wafer solar cells dominated the PV market due to their cost-effectiveness.

How efficient are plasma PSG etched solar cells?

Plasma PSG etched solar cells reach efficiencies of 15 % on Cz-Si and 14.1 % on mc-Si material with excellent fill factors. The difference of 0.4 % in efficiency to wet chemical PSG etched solar cells can be mainly explained by the reduced short circuit current on Cz-Si material.